.page-bars{
    display: flex;
    padding: 10px;
}
.page-bars-left,.page-bars-right{
    flex: 1;
    border:1px solid skyblue;
    position: relative;
}
.page-line,.page-bars-chart{
    width: 100px;
    height: 30px;
    background: pink;
    position: absolute; 
    left: 45%;
    top: -11px;
    text-align: center;
    line-height: 30px;
    color:white;
}